LSMIITTH Gas Burner for Gas Forges, 100,000 BTU, Brass Needle Valve, High Pressure Propane, LPG, Butane Gas, 8'' Long Feed Tube

I set mine up into a 1' cube cement board furnace in an a mild steel frame. Torch from the top flame down. But it was difficult to focus the flame. It produces plenty of heat. So much that it cracked the roof light because I forgot to open it. 10 feet above.It was getting the flame length to work in the furnace that was difficult. Tried raising and lowering, and adjusting the air vent, but couldn't get what i needed.It is entirely possible that my little furnace might have been too small perhaps. Given that the burner is very powerful.Build quality is not as good as it could be, but for the price, that's what you pay for and it delivers. I just couldn't set it in my environment.Overall. HOT. POWERFULL. You might need a bigger furnace.